i use Yumega plus ,its a bit expensive but really helped my dogs coat ,salmon oil is really good for them too...alot of coat conditions are because of what we feed our dogs and not all the ingredients agree with the dog ..then causing skin complaints ..pain in the butt trying to find a good food that agrees with all my lot.Dont know why the food companies have to put all the crap in the food...dogs dont need it .Think i will breed some pigs and grow veg